Wislicenus is an impact crater on Mars, located in the Sinus Sabaeus quadrangle at 18.4° south latitude and 348.6° west longitude.

It measures approximately 140.15 km (87.09 mi) in diameter and was named after German astronomer Walter Wislicenus (1859–1905).

Scientists are excited about finding hydrated minerals such as sulfates and clays on Mars because they are usually formed in the presence of water.

[2] Areas that contain clays and/or other hydrated minerals would be good places to look for evidence of life.

[4] However, the presence of hydrated minerals in Wislicenus crater is strong evidence for the involvement of water, perhaps in a lake.